Home / 131,112.27-180,931.93-80,124.80

Finding the Fourth Proportional to 131,112.27, 180,931.93 and 80,124.80

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Solution

The fourth proportional to 131,112.27, 180,931.93 and 80,124.80 is: 110,570.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,112.27 : 180,931.93 = 80,124.80 : x
  2. Step 2: Convert to fraction form
    131,112.27/180,931.93 = 80,124.80/x
  3. Step 3: Cross multiply
    131,112.27x = 180,931.93 × 80,124.80
  4. Step 4: Simplify right side
    131,112.27x = 14,497,133,599.89
  5. Step 5: Solve for x
    x = 14,497,133,599.89/131,112.27
  6. Step 6: Final answer
    x = 110,570.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.